2025 AP Computer Science FRQ Solutions
These are for the 2025 AP Computer Science A FRQ Questions
// 1a)
public int walkDogs(int hour) {
int available = company.numAvailableDogs(hour);
int toWalk = Math.min(maxDogs, available);
company.updateDogs(hour, toWalk);
return toWalk;
}
// 1b)
public int dogWalkShift(int startHour, int endHour) {
int total = 0;
for (int hour = startHour; hour <= endHour; hour++) {
int walked = walkDogs(hour);
int pay = walked * 5;
if (walked == maxDogs || (hour >= 9 && hour <= 17)) {
pay += 3;
}
total += pay;
}
return total;
}
// 2)
public class SignedText {
private String signature;
public SignedText(String firstName, String lastName) {
signature = (firstName.length() == 0) ? lastName :
firstName.substring(0, 1) + "-" + lastName;
}
public String getSignature() {
return signature;
}
public String addSignature(String text) {
int sigLen = signature.length();
int textLen = text.length();
if (textLen < sigLen)
return text + signature;
if (text.substring(0, sigLen).equals(signature))
return text.substring(sigLen) + signature;
if (text.substring(textLen - sigLen).equals(signature))
return text;
return text + signature;
}
}
// 3a)
public Round(String[] names) {
competitorList = new ArrayList<Competitor>();
int i = 1;
for (String str : names) {
competitorList.add(new Competitor(str, i));
i++;
}
}
// 3b)
public ArrayList<Match> buildMatches() {
ArrayList<Match> matches = new ArrayList<Match>();
int end = 0;
for (int i = competitorList.size() % 2; i < (competitorList.size()+1)/2; i++)
{
matches.add(new Match(competitorList.get(i),
competitorList.get(competitorList.size() - 1 - end)));
end++;
}
return matches;
}
// 4a)
public SumOrSameGame(int numRows, int numCols) {
puzzle = new int[numRows][numCols];
for(int r=0; r<numRows; r++)
for(int c=0; c<numCols;c++)
puzzle[r][c] = (int)(Math.random()*9)+1;
}
// 4b)
public boolean clearPair(int row, int col) {
int num = puzzle[row][col];
for (int r = row; r < puzzle.length; r++) {
for (int c = 0; c < puzzle[0].length; c++) {
if (r == row && c == col)
continue;
if (puzzle[r][c] == num || puzzle[r][c] + num == 10) {
puzzle[row][col] = 0;
puzzle[r][c] = 0;
return true;
}
}
}
return false;
}Explore More From CS++…
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